题解 | 小球走过路程计算

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        float h=scanner.nextFloat();
        int n =scanner.nextInt();

        //write your code here......
        float H=h;
        float sum = 0;
        for(int i=0; i<n ; i++){
            sum = sum + h*2 ;
            h=h/2;
            
        }
        sum = sum-H;
        System.out.println(String.format("%.3f", h)+" "+String.format("%.3f", sum));


        //输出格式为：System.out.println(String.format("%.3f", h)+" "+String.format("%.3f", sum));
        

    }
}